Grammar Reference
- Interactive Grammar Tutor
- The Internet Handbook of German Grammar by Mark Whitaker
- http://www.germanlanguageguide.com/german/grammar
This introduction to German grammar explains basic German sentence structure, verb tenses, genders of nouns etc. - http://german.about.com/library/blgrammatik.htm
Articles about German grammar organized under different topics. - http://www.travlang.com/languages/german/ihgg
An online German Grammar handbook. - http://www.german-grammar.de/grammar/content/english_german_table_of_content.htm
Detailed grammatical categories with excellent explanations, examples and exercises. - http://www.deutschonline.de/Deutsch/Grammatik/Frame1.htm
Deutschonline provides extensive and elaborate explanations of German grammar, grouped into over 20 topics. - http://www.grammatikdeutsch.de
Another German grammar website with games and exercises.